>> 14 of them. i was prepared. but i said, this could be unpleasant in front of millions of people. and out of the 14, you know, jeb and i guess rand paul who doesn't have a chance -- i mean, what's he doing? >> reporter: trump took on a more serious tone but the look on his face said it all. one priceless expression after another. this time, most of his rivals ignored him. not jeb bush who seemed to relish confronting the billionaire front-runner. >> so donald, you know, is great at the one-liners. but he's a chaos candidate. and he would be a chaos president. he would not be the commander in chief we need to keep our country safe. >> jeb doesn't really believe i'm unhinged. he said that very simply because he's failed in this campaign. it's been a total disaster. nobody cares. >> donald, you're not going to be able to insult your way to the candidacy. >> reporter: with trump and cruz